Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
J Environ Health Sci Eng. 2014 Jan 8;12(1):18. doi: 10.1186/2052-336X-12-18.
Nowadays, antibiotics such as amoxicillin have been entered in water bodies. Nanofiltration has been proposed as an attractive technology for removal of antibiotics from aquatic environment instead of conventional wastewater treatment. In this paper, novel asymmetric flat sheet nanofiltration membranes were prepared via immersion precipitation technique and by using the poly(ethersulfone)/Brij®S100/Poly(vinylpirrolidone)/1-methyl-2-pyrolidone casting solutions. The effect of addition of Brij®S100 as a non-ionic surfactant additive as well as concentration of poly (ethersulfone) on morphology, wettability, pure water flux and rejection of amoxicillin were studied using the scanning electron microscopy, water contact angle apparatus and experimental set-up. The results indicated that the addition of Brij®S100 to the casting solutions resulted in the formation of membranes with higher hydrophilicity and relatively noticeable rejection of amoxicillin up to 99% in comparison with unmodified poly(ethersulfone) membrane. Contrary to amoxicillin rejection, pure water flux was decreased when higher poly(ethersulfone) concentration was employed.
如今，阿莫西林等抗生素已经进入水体。纳滤已被提议作为一种从水生环境中去除抗生素的有吸引力的技术，而不是传统的废水处理。本文通过浸没沉淀技术，利用聚醚砜/Brij®S100/聚（乙烯基吡咯烷酮）/1-甲基-2-吡咯烷酮铸膜液制备了新型不对称平板纳滤膜。研究了添加非离子表面活性剂 Brij®S100 以及聚醚砜浓度对膜形态、润湿性、纯水通量和阿莫西林截留率的影响，采用扫描电子显微镜、水接触角仪和实验装置进行了研究。结果表明，与未改性的聚醚砜膜相比，铸膜液中添加 Brij®S100 会形成具有更高亲水性和相对较高阿莫西林截留率（高达 99%）的膜。与阿莫西林截留率相反，当使用更高浓度的聚醚砜时，纯水通量会降低。
